Paper receptacle.



. G l F I J E N K I N S I I PPPPPPPPPPPPPPP E. PPPPPPPPPPPPPPPPPPPPPPPPPP 5.

UNITED STATES PATENT OFFICE.

PAPER RECEPTACLE.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed July 25, 1905. Serial No. 271,15.

1'0 ctZZ whom, it may concern.-

Be it known that I, CHARLES FRANCIS J EN- KINs, a citizen of the United States, and a resident of IVashington, District of Columbia, have invented a new and useful Improvement in Paper-Tube Boxes or the Like, of which the following is a full, clear, and exact description. 7

The principal object of my invention is to secure in a receptacle of this class the greatest possible strength with the least possible material. These two desirable features are accomplished by employing a straight inner tube wrapped spirally with a strip of paper forming the outer shell of the two-ply tube.

The particular object for which this recep tacle is constructed is the delivery of milk in small quantities, thus taking the place of the glass milk bottle in common use at this time, whichlatter is repeatedly filled under notoriously unsanitary conditions. By making the bottle of paper in the particular form here shown it has been found that sufficient strength is obtained while employing so little material as to allow of thebottle being thrown away after the milk is delivered to the consumer. The form of receptacle shown herein also lends itself very readily to construction in an automatic machine, and these two featuresminimun1 amount of material and automatic constructionhave finally solved the problem of sanitary milk delivery in a single-service bottle.

The above desirable features of construction are secured in the manner disclosed in the following specification and accompany ing drawings, in which Figure I is a two-ply tube before the top or bottom has been put in Fig. 2, the same tube with bottom inserted and the tube broken away at the top to show the stop ring, while Fig. 3 is a longitudinal section through the bottle.

In the drawings, A is the two-ply tube, showing the straight lap (or but slightly spiral at most) of the inside tube at B, wrapped with the narrower strip laid on spirally, with glue or paste between to secure the two shells together. C indicates the bottom, which is a plain disk, the friction of which against the inside of the tube holds it firmly in lace. D is a ring, of the same or other suita le material, forced into the tube and against which the disk cap E comes to close the top. The purpose of havingthe ring held in the tube by friction with the sides is to permit it to be forced downward to expel the air above a quantity of fluid less than the full capacity of the box. For exam le, half a pint of milk could be delivered in t ese paper boxes in as good condition as a pint by pushing down the top and the supporting-ring until it expels practically all the air above the half-pint of milka very desirable end. This ring also strengthens the tube to more or less extent.

I am aware that both straight and spiral tubes have been made; but I have found by extended experimentation that neither possesses the structural strength of the particular form of tube herein disclosed with the same weight and amount of material used. It has been found that a tube of this construction weighing less than an ounce will support a hundred-pound weight.

It will readily be understood that two or more strips might be used as wrappers for this tube without departing from the spirit of my invention, and I do not, therefore, wish to limit myself to the single construction shown in the accompanying drawings.

I/Vhat I claim as my invention is 1. The combination with a receptacle of paper or the like internally of uniform size and shape for a considerable portion of its length, of a broad readily removable and insertible ring closely fitting the uniform portion and by frictional engagement therewith resisting while permitting sliding movement.

2. The combination with a tubular paper cup having its upper portion of uniform crosssection, of a broad, readily removable ring closely fitting said portion and offering yielding frictional resistance to sliding force, and a diaphragm, at the edge of said ring, forming a closure for the cup.

C. FRANCIS JENKINS.

I/Vitnesses:

ALEXANDER H. GALT, JOHN R. BOLLING. 

